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प्रश्न
Write the reactions involved in the zone of reduction in blast furnace during extraction of iron.
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उत्तर
Zone of reduction:-
Carbon monoxide reduces ferric oxide to spongy iron (porous solid) at about 900 K.
\[\ce{3Fe^2O^3 + CO -> 2Fe^3O^4 + CO^2}\]
\[\ce{Fe^3O^4 + 4CO -> 3Fe + 4CO^2}\]
\[\ce{Fe^2O^3 + CO -> 2FeO + CO^2}\]
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संबंधित प्रश्न
Write the names and chemical formulae of any one ore of iron.
Write chemical formulae of the following ores :
(a) Calamine
(b) Haematite
(c) Magnetite
(d) Corundum
Fe2O3 is reduced to spongy iron near the top of blast furance by
(A) H2
(B) CaO
(C) SiO2
(D) CO
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(a)Hoope process
(b)Hall process
(c)Baeyer process
(d)Serperck process
What is the role of CO in the extraction of Iron?
Name the method used for refining of copper metal.
Which of the ores mentioned can be concentrated by magnetic separation method?
Define leaching.
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(a) Cryolite
(b) Siderite
(c) China clay
(d) Corundum
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(i) Give an equation to show how zinc oxide is converted to zinc.
(ii) How is impure zinc finally electro-refined?
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The main reactions occurring in blast furnace during extraction of iron from haematite are:
(i) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
(ii) \[\ce{FeO + SiO2 -> FeSiO3}\]
(iii) \[\ce{Fe2O3 + 3C -> 2Fe + 3CO}\]
(iv) \[\ce{CaO + SiO2 -> CaSiO3}\]
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When a strip of metallic zinc is placed in an aqueous solution of copper nitrate the blue colour of the solution disappear due to formation of
Metal always found in Free State is
Which of the following is not an ore of magnesiuim?
Pyrolusite is ______.
The ore that contains both iron and copper is ______.
